Just a heads up.

Trojan.Xombe is a Trojan horse that has at least two components: a 4,096 byte downloader and a 27,136 byte Trojan. The downloader component will retrieve the Trojan file from a predetermined Web site.

The download component has been distributed in an unsolicited email, purporting to be a security update for Windows XP, sent by Microsoft.

The email has the following characteristics:

From: [email protected]
Subject: Windows XP Service Pack 1 (Express) - Critical Update.
Attachment: winxp_sp1.exe(4,096 KB)
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